Remove unused GRDB data convertible code

Author: simolus3

Sources/PowerSyncGRDB/Connections/GRDBConnectionLease.swift

@@ -17,27 +17,4 @@ final class GRDBConnectionLease: SQLiteConnectionLease {
         self.pointer = connection
         self.database = database
     }
-}
-
-extension PowerSync.PowerSyncDataType: DatabaseValueConvertible {
-    public var databaseValue: GRDB.DatabaseValue {
-        switch self {
-        case .bool(let value):
-            return value.databaseValue
-        case .string(let value):
-            return value.databaseValue
-        case .int64(let value):
-            return value.databaseValue
-        case .int32(let value):
-            return value.databaseValue
-        case .double(let value):
-            return value.databaseValue
-        case .data(let value):
-            return value.databaseValue
-        }
-    }
-
-    public static func fromDatabaseValue(_ dbValue: GRDB.DatabaseValue) -> PowerSync.PowerSyncDataType? {
-        nil
-    }
-}
+}